Advances in Gyroscope Technologies

Towards a fully integrated optical gyroscope using whispering gallery modes resonators

“…Larger SiO 2 disks, with diameters up to 5 mm, have also been fabricated, and the highest quality factor Q obtained to date with this process is of 6.5×10 6 for a 2 mm diameter disk as illustrated on Fig.3. The highest Q×D product obtained with these structures is currently of 1.3×10 4 , which is in the range of the current state of the art for resonators used in IORG. Using these values and the parameters given in the Table 1, the actual ultimate minimal rotation resolution from Shot Noise contribution (2) is evaluated to only 125 °/h for our current setup.…”

“…Since the developments of lasers and the optical fibers in the 70s, the optical gyroscopes have been subject to an intensive research to improve both their resolution and stability performances [1][2][3][4]. However the best optical gyroscopes currently on the market, the ring laser gyroscope and the interferometer fiber optic gyroscope are still macroscopic devices and cannot address specific applications where size and weight constraints are critical.…”

Direct-Coupled Large-Diameter Silica on Silicon Waveguide Ring Resonator Used in Microoptic Gyro

“…As a preliminary experiment, only two different modulation frequencies are taken to attenuate the backscatter errors. The bias drift can be decreased by taking countermeasures against system noise, such as backscattering, polarization, and the Kerr effect (Hotate and Koichi 1991;Armenise et al 2010).…”

Design and optimization of a fiber optic data link for new generation on-board SAR processing architectures

“…analog and digital communication links [4], RF signal processing [5], and sensing [6][7][8][9][10]. In particular, as they allow both elimination of cable-to-cable electromagnetic-interference effects and reduction of size, weight, and power consumption, fiber-optic links for on-board data handling are the topic of an increasing R&D activity involving several research group all over the world, the main space agencies, and companies.…”